Engine



I. DUSOEVOIKR AND I. R. WELCH.

ENGINE. APPLICATION FILEDSEPT. 6, 1918.

Patented Feb I.|| ./////////I//V//V/V/f, J u ,2f/9555552254w II, Y www will be UNTTED' sTATEs PATENT oEEicE.

JULIUS DUSOEVOIR, OF OAKLAND, AND JAMES R. WELCH, OF SAN JOSE, CALIFORNIA.

ENGINE.

To all whom t may concern.'

Be 1t known that we, JULIUs DUsoEvorR, a

subject of the King of Belgium, residing at Oakland, in the county of Alameda and State of California, and JAMES a citizen of the United States, of San Jose, in the county of Santa Clara and State of California, have invented certain new and useful Improvements inEn- R. WELCH,

gines, of which the following vis a specificanecessary valves and ignition equipment,

and reciprocating cylinders operating inv conjunction therewith and operatively connected to a crank-shaft.

The objects of our invention are to provide an engine of the character indicated that perfectly balanced, that is non-vibrating, that may be cheaply manufactured, that is light, simple and practical and yet capable of generating great power, that is easily accessible-in all parts, easily cooled and easily assembled and taken apart, simplicity of construction being one of its chief characteristics. j

With these objects in view our invention consists in the novel and useful provision, formation, construction, combination 'and relative arrangement and association of parts, members and features as hereinafter described, shown in the drawings and finally pointed out in the claims.

In the drawings Figure 1 is a side elevation of one embodiment of our improved engine.

Fig. 2 is an end elevation of the engine shown in Fig. 1.

Fig. 3'is a sectional View on line 3-3 of Fig. 1.

Fig. 4 is a sectional view on line 4`4 of Fig. 1. j

Fig. 5 is a sectional view on line 5 5 of Fig. 3.

Fig. 6 is a diagrammatical illustration of one position of the reciprocating cylinders. Fig. 7 is a diagram illustrating ourimproved engine mounted to rotate on a fixed axis.

Similar characters of reference indicate similar parts throughout the several views. Referring now more particularly 'to the Specification of Letters Patent. Applicationmea september e, 191s.

and resident y closed at one end stationary piston 4. These vpreviously drawn into compressed. Upon the ignition and explo- Serial No. 252,876.

. 5c and their corresponding nuts 6, 6a, 6b and 6c respectively. tons l and 4 are and are in the The two end statlonary pisdirected toward each other, form of hollow cylinders portions oftheir side Walls removed as at 9 and 10 to render the interiors thereof readily accessible. .An exhaust valve is positioned in each piston as at 1l and-l2, also an inlet valve as at 13 and 14', and ignition devices asat 15 and 16- respectively.

The two pistons 2 and 3 are alined with pistons 1 and 4 and positioned midway therebetween, stationary piston 2 facing stationary piston 1 and stationary piston 3 facing pistons 2 and 3 are equlpped with exhaust valves 17 and 18, inlet valves 19 and 20, and ignition devices 21 and 22 in a manner similar to pistons and 4 above described.

Mounted to reciprocate upon stationary pistons 1 and 2 is a hollow cylinder 23 provided with a central partition 24'thereby forming two explosion chambers 25 and 26 and providing a bearing 27 for wrist-pin 28. Likewise mounted to reciprocate upon heads 3 and 4 is a hollow cylinder 29 identical in form, shape and size with that above described and having a central partition 30 thereby forming two explosion chambers 31 and 32 and providing a bearing 33 for Wrist-pin 34.

In bearings 35 formed at the juncture of stationary pistons 2 and 3 is mounted a crank-shaft 36 connected to wrist-pin 28 by connecting-rods 38.

lThe preferred method of operating our as at 7 and 8 and havingV Patented Feb. 3, 1920.

improved engine is tosuccessively explode combustible mixtures in the several chambers, an example of its follows. Suppose the several parts be positioned as shown in Fig. 3 and the charge in chamber 26 eX loded. Then the cylinders 23 and 29 lwill be forced simultaneously outwardly to the positions indicated in Fig. 6, chamber 25 exhausting, chamber 31 being filled with a fresh charge,

' chamber 32 being and the charge operation being as hausting, chamber sion of the compressed charge in chamber 32 the cylinders 23 and 29 are forced back into the first position with chamber 26 ex- 25 being iilled with a fresh charge and the charge in chamber 31 being compressed. The next two 'explosions would occur 1n chambers 31 and 25 respecl shaft 36 at 40'and 41. Uponcam shaft '39 obtaining increased eiiiciency ling bell-cranks 49,- 50

is placed a cam 42 which operates a. bellcrank 43 pivoted at 44, the end of the shorter arm 45 of said bell-crank operating in contact with the said valve mechanism 12. Valves 11, 13 and 14 may be operated in a similar manner by cams 46, 47 and 48 operatand 51 respectively.

Valves 17, 18, 19 and 20 may be operated in any suitable manner as by bell-cranks 52, 53, 54 and 55 pivoted at 56 and 57 and operated independently of ea.ch other by said cams 42, 46, 47 and 48 so that each of said valves may be operated in conjunction with vthe proper valve mechanism of one of the end pistons.

Various methods of ignition may also be employed. We, have shown herein a magneto at 58 to operate the several ignition devices 15, 16, 21 and 22.

.in Fig. 7 the engine is indicated asbalanced upon a fixed shaft mounted Von base 59 so [that the operation of .the engine as' hereinbefore describedA will cause the engine to rotate about the shaft 36.

From the foregoing description nection with the accompanying drawings, it will be seen that we have provided a construction in which the fixed pistons are rigidly mounted in axial alinement, serving both as abutments to form part of the `several combustion-chambers and as guides and supports for the reciprocating cylinders, thereby greatly simplifying the engine and er given pound of weight. The construction shown is such readily reached without taking itapart, it may be taken apart quickly by simply un- .couplingp'the tie-rods and ,connecting-rods and disengaging the cylinders from the pistons upon which they operate.

llt is particularly pointed out that the engine; is perfectly balanced because the several fixed pistons and the reciprocating cylinders must be and are in perfect axial alinement and are made uniform in size and the said connecting-rods in conthat all parts of the engine maybbe utA weight. Each vmovement ofany portion of the engine in one direction is balanced by a similar movement of a corresponding part of the engine in the opposite direction, even the weights and movements of the connecting-rods being equally balanced. The

doubled cylinders 23. and 29 are uniform in shape, size and weight and move simultaneously exactly an equal distance in opposite directions. .The perfect balancing of both the movable and immovable parts equalizes the strains upon the e'n 'ne and consequently reduces the ioss of energy through friction. The perfect balancing of the engine eliminates vibration and the energy that would otherwise be dissipated through vibration is conserved'and addedto the working energy and the efficiency of the engine thereby increased. l

Increased efficiency is also secured hygthe use of comparatively long connecting-rods whereby their angle with the throw of' the crank is materially reduced, attention also being called to the' increased eiiciency obtained by having the crank exactlyV midway between the reciprocating cylinders and attached to said cylinders exactly midway their length so that the work of each double cylinder is equally divided between its two ifialves.l .lt is further pointed out that the construction of the various parts is such that free circulation of air is obtained not only around the cylinders themselves but also through thel in terior -of the fixed pistons, thisfeature assisting materially in heat radiation and consequent eiiciency of the engine.

1t is understood, of course, that we donot wish to' confine ourselves to the specific form and construction above described, as various hollow, cylindrical piston having a crankshaft passing transversely through the center thereof and having an exhaust and inlet valve and ignition means operatively positioned in each head thereof, an opposing piston iixedly positioned in axial alinement with and in spaced relation to each head of said double-headed piston and having inlet and exhaust valves and ignition means operatively positioned therein, a double cylinder loperatively mounted to reciprocate on each pair of opposed pistons, and connecting rods 2. An engine comprising a double-headed, hollow, cylindrical piston having a crankshaft passing transversely through thecenter thereof, having an exhaust and inlet valveand ignition means operatively posishaft passing transversely through the centioned in eachhead thereof, andprovided with openings to -render the interior thereof accessible, an opposing piston xedly positioned in axial 'alinement with and in spaced relation to each head of said double-headed piston and. having an inlet and an exhaust valve and ignition means` operatively positioned therein, crank-shaft operated bellcranks operatively mounted to engage said valves atA predetermined periods, a double cylinder operatively mounted to reciprocate on each pair of opposed pistons, and connecting rods operatively attached to said double-cylinders .and to the said crank shaft.

3. An engine comprising a double-headed, hollow, cylindrical piston having a crankter thereof, flanges. extending outwardly from the central portion thereof, an inlet,A and an exhaust valve and ignition means` operatively,positioned-in each head thereof,

and provided with openings to render the interior'thereof accessible, an opposing pist0n spaced a distance 'from each head o f said double-headed piston and having an inlet and an exhaust valve and ignition means operatively positioned therein, provided ,with openings to render the interior thereof accessible and having flanges extending outwardly from the outer ends thereof, rods passing throughv all of said H anges to secure all .of said pistons in fixed axial Aalinelnent A with each other, a double cylinder operatively mou'nted'to reciprocate on each pair of -opposed pistons, and connectin rods operatively attached to said double cy inders and to the said crank-shaft. ,y

4. An engine comprising a pair 'of opposed pistons, having portions of their sidesy removed and having their' outer ends open and provided with flanges, a pair of. op'- positely directed pistons positioned inter- .mediate said opposed-pistons havingv portions of their sides removed-and jolned `at their` 'abutting vends and provided, with flanges, rods passing through all of said flanges and secured thereto for lookin all of'said p istons in fixed spaced and axially alined relation to each other, a crank-shaft operatively mounted betweenV the abutting ends of said oppositely directed pistons, a v

pair of double' cylinders, eacht double cylinder being operatively mounted to reclprocate upon -one of said opposed pistons land the' adjacent intermediate piston, apair of connecting-rods operatively connected to each double cylinder intermediate its length and to the said crank-shaft, and means whereby said double cylinders may be caused to reciprocate simultaneously but in opposite directions upon their respective istons.

JULIUS DUS EVO'IR. JAMES R. WELCH.v 

